# AD 63-07-04: Air Casing

- Type: Airworthiness directive
- Status: Current
- Products: Rolls-Royce Deutschland Dart 506, Dart 510, Dart 511, Dart 511-7E, Dart 514, Dart 514-7, Dart 525, Dart 525F, Dart 526, Dart 527, Dart 528-7E, Dart 528D-7E and 34 more
- Effective: May 2, 1963
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1098A669940CBBAB862569D000701F1A.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/63-07-04

## The airworthiness directive

63-07-04 ROLLS-ROYCE: Amdt. 549 Part 507 Federal Register April 2, 1963. Applies to All Model Dart Engines. Compliance required as indicated.

To prevent failures in service of combustion chamber air casings of Pre-Modification 553 standard, which failures have been attributed to fatigue cracks originating around suspension pin soleplates, accomplish the following:

  (a) Within the next 100 hours' time in service after the effective date of this AD, on engines with combustion chamber air casings not incorporating Modification 553 standards except engines with air casings of Pre-Modification 97 standards, accomplish (1) or (2):

  (1) Install strengthened air casing incorporating Rolls-Royce Modification 553 standards; or

  (2) Install air casing straps using:

    (i) Mod. 612 standards which modification sets forth a positive location for antitear straps for Pre-Mod 553 air casings; or

    (ii) Mod. 1021 standards which modification covers Pre-Mod. 553 air casings which have been modified to Mod. 855 standards providing an additional boss for burner cleaning.

  (b) Remove air casings of Pre-Mod. 97 standard at the next engine overhaul and replace with air casings conforming to the standards set forth in (a).

(Rolls-Royce Notice to Operators Dart Engines No. 99 Issue 3 dated June 29, 1962, covers the same subject.)

This directive effective May 2, 1963.

## Affected data sheets (3) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E-297](https://openairdocs.org/tcds/E-297): Rolls-Royce Deutschland Ltd & Co KG; names 31 of 31 models: Dart 532-7R, Dart 529D-8H, Dart 529-8X, Dart 535-7R, Dart 552-2, Dart 529-7H, Dart 531, Dart 529-8H…
- [TCDS E5EU](https://openairdocs.org/tcds/E5EU): Rolls-Royce Deutschland Ltd & Co KG; names 5 of 5 models: Dart 542-4, Dart 542-10, Dart 542-4K, Dart 542-10K, Dart 542-10J
- [TCDS E-283](https://openairdocs.org/tcds/E-283): Rolls-Royce Deutschland Ltd & Co KG; names 4 of 4 models: Dart 514, Dart 511, Dart 511-7E, Dart 514-7

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 6 (0 by airframe model, 6 by engine model)
- Makers: Grumman 3, Fairchild 1, Fokker 1, Nihon 1

Models with the most aircraft:

- [Rolls-Royce DART-529 series](https://openairdocs.org/engine/rolls-royce-dart-529-series): 4 aircraft (engine model)
- [Rolls-Royce DART-535-7R](https://openairdocs.org/engine/rolls-royce-dart-535-7r): 1 aircraft (engine model)
- [Rolls-Royce DART-542 series](https://openairdocs.org/engine/rolls-royce-dart-542-series): 1 aircraft (engine model)

All 3 models: https://openairdocs.org/ad/63-07-04/models.md
Every aircraft: https://openairdocs.org/ad/63-07-04/aircraft.md

Its text cites no advisory circulars or STCs.

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